Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1996-11-22
1998-10-27
Prebilic, Paul B.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 244
Patent
active
058273280
ABSTRACT:
An intervertebral prosthetic device for replacement of an intervertebral disc includes a first fixation member for fixation within a first vertebral body and a second fixation member for fixation within a second vertebral body adjacent the first vertebral body. The present prosthetic device also includes a compressible member for positioning between the first and second fixation members. The compressible member has an outer periphery less than or substantially equal to a diameter of a nucleus pulposus of the intervertebral disc. The compressible member thus essentially fits within the annulus fibrosis of the intervertebral disc. The compressible member also has at least one spring that can be pre-loaded to place the annulus fibrosis under tension and to reproduce the mechanical properties of a natural disc.
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